Environment-friendly degradable packaging composite film and preparation method thereof

A composite film, an environmentally friendly technology, applied in the field of packaging materials, can solve the problems of not being able to take into account cost and film degradation effect, mechanical properties, polymer crystallinity decrease, composite film quality degradation, etc., to achieve good mechanical properties and processability Improve and enhance the effect of water repellency

Active Publication Date: 2019-07-09
瑞力恒生态科技(深圳)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the research found that there are the following problems: 1. The heat resistance of the sandwich layer is poor. In the process of multi-layer co-extrusion casting, polylactic acid is easy to melt with starch, and it is easy to produce starch in a high temperature environment above 150°C. Denaturation and fragmentation into dextrin, resulting in burnt smell, which greatly reduces the quality of the composite film; 2. During the

Method used

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  • Environment-friendly degradable packaging composite film and preparation method thereof
  • Environment-friendly degradable packaging composite film and preparation method thereof
  • Environment-friendly degradable packaging composite film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] An environment-friendly degradable packaging composite film in this embodiment includes the following raw materials in parts by weight: 145 parts of modified PBS resin, 53 parts of heat-resistant modified starch, 18 parts of Biofiller828 photooxidation-biodegradation accelerator, nano-volcanic ash 14 parts, 8 parts of calcium stearate, 7 parts of nano calcium carbonate powder;

[0038] Wherein, the modified PBS resin includes the following raw materials in parts by weight: 103 parts of PBS resin, 46 parts of sago starch, 9 parts of chlorinated palm oil methyl ester, 11 parts of maleic anhydride grafted ethylene-1-octene copolymer, 4 parts of water pearlescent sand, 1.6 parts of precipitated silica; wherein, the density of the PBS resin is 1.25g / cm 3 , the melting point is 112-116°C, the heat distortion temperature is 52°C, and the Vicat softening point is 82°C; the preparation method of the modified PBS resin comprises the following steps:

[0039] 1) High-speed mixing...

Embodiment 2

[0052] An environment-friendly degradable packaging composite film of this embodiment includes the following raw materials in parts by weight: 145 parts of modified PBS resin, 53 parts of heat-resistant modified starch, 19 parts of Biofiller828 photooxidation-biodegradation accelerator, nano-volcanic ash 15 parts, 10 parts of calcium stearate, 8 parts of nano calcium carbonate powder;

[0053] Wherein, the modified PBS resin includes the following raw materials in parts by weight: 115 parts of PBS resin, 46 parts of sago starch, 10 parts of chlorinated palm oil methyl ester, 13 parts of maleic anhydride grafted ethylene-1-octene copolymer, 5 parts of water pearlescent sand, 2.5 parts of precipitated silica; wherein, the density of the PBS resin is 1.25g / cm 3 , the melting point is 112-116°C, the heat distortion temperature is 52°C, and the Vicat softening point is 82°C; the preparation method of the modified PBS resin is the same as that of Example 1.

[0054] The preparation...

Embodiment 3

[0060] An environment-friendly degradable packaging composite film of this embodiment includes the following raw materials in parts by weight: 127 parts of modified PBS resin, 56 parts of heat-resistant modified starch, 20 parts of Biofiller828 photooxidation-biodegradation accelerator, nano-volcanic ash 16 parts, 10 parts of calcium stearate, 8 parts of nano calcium carbonate powder;

[0061] Wherein, the modified PBS resin includes the following raw materials in parts by weight: 113 parts of PBS resin, 42 parts of sago starch, 10 parts of chlorinated palm oil methyl ester, 13 parts of maleic anhydride grafted ethylene-1-octene copolymer, 6 parts of water pearlescent sand, 2.5 parts of precipitated silica; wherein, the density of the PBS resin is 1.25g / cm 3 , the melting point is 112-116°C, the heat distortion temperature is 52°C, and the Vicat softening point is 82°C; the preparation method of the modified PBS resin is the same as that of Example 1.

[0062] The preparation...

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Abstract

The invention discloses an environment-friendly degradable packaging composite film and a preparation method thereof. The composite film comprises the following raw materials: in parts by weight, 120-150 parts of modified PBS resin, 45-60 parts of heat-resistant modified starch, 15-22 parts of a degradation accelerator, 12-16 parts of nano-pozzolan, 5-11 parts of calcium stearate and 3-9 parts ofnano-calcium carbonate powder, and pulverization mixing and multi-layer co-extrusion casting are performed so as to prepare the composite film. The PBS resin is modified through selection of the sagostarch, an environment-friendly plasticizer and functional filler so that the mechanical properties and heat resistance of the PBS resin are improved; the modified PBS resin and the heat-resistant modified starch, the degradation accelerator, the lubricant calcium stearate and the nano-filler are pulverized and mixed, and multi-layer co-extrusion cast stretching is performed so as to obtain the composite film; and it is shown through tests with standard methods that the composite film has good tensile strength, elongation at break, heat-resistant flame retardancy and light-biological double-degradation performance.

Description

technical field [0001] The invention relates to the technical field of packaging materials, in particular to an environment-friendly degradable packaging composite film and a preparation method thereof. Background technique [0002] Composite film refers to a film compounded by a variety of different polymers by co-extrusion blow molding, co-extrusion casting or co-extrusion stretching. As a plastic packaging material, this film is widely used in the fields of food, processed meat products, daily necessities, cosmetics, chemical products, and pesticides, and can realize sealed flexible packaging of products and various packaging functions such as inflating, vacuuming, and thermoforming. Excellent properties such as high moisture resistance, oxygen resistance, oil resistance, and fragrance retention in complex environments. [0003] With the wide application of polyethylene film in assembly and agricultural film, a large amount of plastic waste is difficult to degrade in the...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08L3/02C08L51/06C08L67/04C08K13/02C08K5/101C08K3/36C08K5/098C08K3/26C08K5/103C08J5/18C08G63/08C08G63/87B29C48/00B29C48/92B29C69/00B29B7/28
CPCB29B7/28C08G63/08C08G63/823C08J5/18C08J2367/02C08J2403/02C08J2451/06C08J2467/04C08K3/36C08K5/098C08K5/101C08K5/103C08K13/02C08K2003/265C08K2201/011
Inventor 不公告发明人
Owner 瑞力恒生态科技(深圳)有限公司
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